Money and stability
- What do you do, and is your income monthly or irregular?
- Have you ever been unable to pay rent on time? What happened?
- How do you want to handle bills: one person pays and is reimbursed, or split at source?
- How long do you plan to stay?
Daily life
- What time do you leave and return?
- Do you work night shifts or from home?
- How often do you have guests, and do partners stay over?
- Do you cook daily, and how do you feel about shared fridge space?
- Do you smoke or drink at home?
- How loud is your music, and until when?
Boundaries and history
- How do you prefer to raise a problem with someone you live with?
- Who did you live with last, and why did it end?
- Can I speak to your previous flatmate?
- Do you keep pets?
- What would make you move out suddenly?
Meet twice, at least once inside the property, and trust a mismatch in daily routine as much as a mismatch in money.